205 lines
6.8 KiB
C
205 lines
6.8 KiB
C
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/*
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* Copyright 2018-2021 NXP
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* All rights reserved.
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*
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#include "fsl_tempmon.h"
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/*******************************************************************************
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* Definitions
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******************************************************************************/
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/* Component ID definition, used by tools. */
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#ifndef FSL_COMPONENT_ID
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#define FSL_COMPONENT_ID "platform.drivers.tempmon"
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#endif
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/*! @brief TEMPMON calibration data mask. */
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#define TEMPMON_HOTTEMPMASK 0xFFU
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#define TEMPMON_HOTTEMPSHIFT 0x00U
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#define TEMPMON_HOTCOUNTMASK 0xFFF00U
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#define TEMPMON_HOTCOUNTSHIFT 0X08U
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#define TEMPMON_ROOMCOUNTMASK 0xFFF00000U
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#define TEMPMON_ROOMCOUNTSHIFT 0x14U
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/*! @brief the room temperature. */
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#define TEMPMON_ROOMTEMP 25.0f
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/*******************************************************************************
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* Prototypes
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******************************************************************************/
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/*******************************************************************************
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* Variables
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******************************************************************************/
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static int32_t s_hotTemp; /*!< The value of TEMPMON_TEMPSENSE0[TEMP_VALUE] at room temperature .*/
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static int32_t s_hotCount; /*!< The value of TEMPMON_TEMPSENSE0[TEMP_VALUE] at the hot temperature.*/
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static float s_hotT_ROOM; /*!< The value of s_hotTemp minus room temperature(25 degrees celsius).*/
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static int32_t s_roomC_hotC; /*!< The value of s_roomCount minus s_hotCount.*/
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/*******************************************************************************
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* Code
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******************************************************************************/
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/*!
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* brief Initializes the TEMPMON module.
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*
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* param base TEMPMON base pointer
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* param config Pointer to configuration structure.
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*/
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void TEMPMON_Init(TEMPMON_Type *base, const tempmon_config_t *config)
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{
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assert(NULL != config);
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uint32_t calibrationData;
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uint32_t tmpU32;
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int32_t roomCount;
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/* Power on the temperature sensor*/
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base->TEMPSENSE0 &= ~TEMPMON_TEMPSENSE0_POWER_DOWN_MASK;
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/* Set temperature monitor frequency */
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base->TEMPSENSE1 = TEMPMON_TEMPSENSE1_MEASURE_FREQ(config->frequency);
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/* ready to read calibration data */
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calibrationData = OCOTP->ANA1;
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tmpU32 = (calibrationData & TEMPMON_HOTTEMPMASK) >> TEMPMON_HOTTEMPSHIFT;
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s_hotTemp = (int32_t)tmpU32;
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tmpU32 = (calibrationData & TEMPMON_HOTCOUNTMASK) >> TEMPMON_HOTCOUNTSHIFT;
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s_hotCount = (int32_t)tmpU32;
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tmpU32 = (calibrationData & TEMPMON_ROOMCOUNTMASK) >> TEMPMON_ROOMCOUNTSHIFT;
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roomCount = (int32_t)tmpU32;
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s_hotT_ROOM = (float)s_hotTemp - TEMPMON_ROOMTEMP;
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s_roomC_hotC = roomCount - s_hotCount;
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/* Set alarm temperature */
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TEMPMON_SetTempAlarm(base, config->highAlarmTemp, kTEMPMON_HighAlarmMode);
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TEMPMON_SetTempAlarm(base, config->panicAlarmTemp, kTEMPMON_PanicAlarmMode);
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TEMPMON_SetTempAlarm(base, config->lowAlarmTemp, kTEMPMON_LowAlarmMode);
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}
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/*!
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* brief Deinitializes the TEMPMON module.
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*
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* param base TEMPMON base pointer
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*/
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void TEMPMON_Deinit(TEMPMON_Type *base)
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{
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base->TEMPSENSE0 |= TEMPMON_TEMPSENSE0_POWER_DOWN_MASK;
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}
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/*!
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* brief Gets the default configuration structure.
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*
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* This function initializes the TEMPMON configuration structure to a default value. The default
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* values are:
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* tempmonConfig->frequency = 0x02U;
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* tempmonConfig->highAlarmTemp = 44U;
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* tempmonConfig->panicAlarmTemp = 90U;
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* tempmonConfig->lowAlarmTemp = 39U;
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*
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* param config Pointer to a configuration structure.
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*/
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void TEMPMON_GetDefaultConfig(tempmon_config_t *config)
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{
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assert(config);
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/* Initializes the configure structure to zero. */
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(void)memset(config, 0, sizeof(*config));
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/* Default measure frequency */
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config->frequency = 0x03U;
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/* Default high alarm temperature */
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config->highAlarmTemp = 40;
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/* Default panic alarm temperature */
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config->panicAlarmTemp = 90;
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/* Default low alarm temperature */
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config->lowAlarmTemp = 20;
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}
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/*!
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* brief Get current temperature with the fused temperature calibration data.
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*
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* param base TEMPMON base pointer
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* return current temperature with degrees Celsius.
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*/
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float TEMPMON_GetCurrentTemperature(TEMPMON_Type *base)
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{
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/* Check arguments */
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assert(NULL != base);
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uint32_t nmeas;
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float tmeas;
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while (0U == (base->TEMPSENSE0 & TEMPMON_TEMPSENSE0_FINISHED_MASK))
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{
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}
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/* ready to read temperature code value */
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nmeas = (base->TEMPSENSE0 & TEMPMON_TEMPSENSE0_TEMP_CNT_MASK) >> TEMPMON_TEMPSENSE0_TEMP_CNT_SHIFT;
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/* Calculate temperature */
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tmeas = (float)s_hotTemp - (((float)nmeas - (float)s_hotCount) * (s_hotT_ROOM / (float)s_roomC_hotC));
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return tmeas;
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}
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/*!
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* brief Set the temperature count (raw sensor output) that will generate an alarm interrupt.
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*
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* param base TEMPMON base pointer
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* param tempVal The alarm temperature with degrees Celsius
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* param alarmMode The alarm mode.
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*/
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void TEMPMON_SetTempAlarm(TEMPMON_Type *base, int8_t tempVal, tempmon_alarm_mode alarmMode)
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{
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/* Check arguments */
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assert(NULL != base);
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/* Different SOC has different qualified temperature level based on AEC-Q100 standard by default, such as Consumer(0
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to +95 degrees celsius)/Industrial(-40 to +105 degrees celsius)/Automotive(-40 to +125 degrees celsius). */
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assert(s_hotTemp >= tempVal);
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int32_t tempCodeVal;
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uint32_t tempRegVal;
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/* Calculate alarm temperature code value */
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tempCodeVal = s_hotCount + (s_hotTemp - (int32_t)tempVal) * s_roomC_hotC / (int32_t)s_hotT_ROOM;
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switch (alarmMode)
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{
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case kTEMPMON_HighAlarmMode:
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/* Clear alarm value and set a new high alarm temperature code value */
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tempRegVal = base->TEMPSENSE0;
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tempRegVal =
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(tempRegVal & ~TEMPMON_TEMPSENSE0_ALARM_VALUE_MASK) | TEMPMON_TEMPSENSE0_ALARM_VALUE(tempCodeVal);
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base->TEMPSENSE0 = tempRegVal;
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break;
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case kTEMPMON_PanicAlarmMode:
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/* Clear panic alarm value and set a new panic alarm temperature code value */
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tempRegVal = base->TEMPSENSE2;
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tempRegVal = (tempRegVal & ~TEMPMON_TEMPSENSE2_PANIC_ALARM_VALUE_MASK) |
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TEMPMON_TEMPSENSE2_PANIC_ALARM_VALUE(tempCodeVal);
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base->TEMPSENSE2 = tempRegVal;
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break;
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case kTEMPMON_LowAlarmMode:
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/* Clear low alarm value and set a new low alarm temperature code value */
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tempRegVal = base->TEMPSENSE2;
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tempRegVal = (tempRegVal & ~TEMPMON_TEMPSENSE2_LOW_ALARM_VALUE_MASK) |
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TEMPMON_TEMPSENSE2_LOW_ALARM_VALUE(tempCodeVal);
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base->TEMPSENSE2 = tempRegVal;
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break;
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default:
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assert(false);
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break;
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}
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}
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